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GRASP Lab Seminar 2004-2005
September 1 (Wednesday), 3:00 PM, Levine Hall 307, hosted by Kostas Daniilidis.
Hany Farid
Dartmouth College
Digital Image Forensics
Abstract: A digitally altered photograph, often leaving no visual clues of having been tampered with, can be indistinguishable from an authentic photograph. As a result, photographs no longer hold the unique stature as a definitive recording of events. I will describe several statistical techniques for detecting traces of digital tampering in the absence of digital watermarks or signatures. In particular, I will describe how we quantify statistical correlations that result from specific forms of digital tampering, and then devise detection schemes to reveal these correlations. I will also briefly describe related work in differentiating between photographic and photorealistic images.
[Joint work with: Kimo Johnson, Siwei Lyu, and Alin Popescu]Biography: Hany Farid received his undergraduate degree in Computer Science and Applied Mathematics from the University of Rochester in 1989. He received his Ph.D. in Computer Science from the University of Pennsylvania in 1997. And he joined the Dartmouth faculty in 1999, following a two year post-doctoral position in Brain and Cognitive Sciences at MIT. Hany's primary appointment is in the Computer Science Department where he is an Associate Professor and Associate Chair. He also holds a joint appointment in the Center for Cognitive Neuroscience.
From working with federal law enforcement agencies on digital forensics, to the digital reconstruction of Ancient Egyptian tombs, Hany works and plays with digital media at the crossroads of computer science, engineering, mathematics, optics, and psychology.
